So ive been a heroin iv user for a while now and normally i would cook .30 of black tar heroin for my shot. But now with my tolerance .30 barely keeps me from being sick so i would like to try .40 up to a half g. I am wanting to know if I can cook a half g of black tar and be able to draw it up in a 1cc syringe. A friend of mine told me .30 is the most i could use in a syringe but I'm wondering if that isnt true. Also when cooking it, as far as water goes, is a syringe full of water enough to use to cook it up in order to be able to draw up the whole half g? Sorry if this is at all confusing and i appreciate any help.